Display panel and electronic device

ABSTRACT

A display panel is disclosed and includes a substrate, a plurality of first light-emitting units, and a plurality of first mesh units. The substrate has a first display region, in which the first display region includes a transparent area. The first light-emitting units are disposed in the first display region and outside the transparent area in a top view direction of the display panel. The first mesh units are disposed in the first display region in the top view direction of the display panel, in which each of the first mesh units has a first mesh frame, and the first mesh frame forms a plurality of first mesh openings. The transparent area overlaps at least one of the first mesh openings in the top view direction of the display panel.

BACKGROUND OF THE DISCLOSURE 1. Field of the Disclosure

The present disclosure relates to a display panel and an electronicdevice.

2. Description of the Prior Art

Electronic devices have become necessary tools in people's lives becausethey can provide various needs for users. In one of the electronicdevices integrated with a display panel, in order to increasescreen-to-body ratio, it has been developed to install an image sensorunder the display panel for detecting images. However, when a touchpanel is disposed on the display panel, poor quality of detected imagesoccurs and needs to be solved.

SUMMARY OF THE DISCLOSURE

According to an embodiment of the present disclosure, a display panel isprovided and includes a substrate, a plurality of first light-emittingunits, and a plurality of first mesh units. The substrate has a firstdisplay region, in which the first display region includes a transparentarea. The first light-emitting units are disposed in the first displayregion and outside the transparent area in a top view direction of thedisplay panel. The first mesh units are disposed in the first displayregion in the top view direction of the display panel, in which each ofthe first mesh units has a first mesh frame, and the first mesh frameforms a plurality of first mesh openings. The transparent area overlapsat least one of the first mesh openings in the top view direction of thedisplay panel.

According to an embodiment of the present disclosure, an electronicdevice is provided and includes the display panel mentioned above and anoptical sensor. The optical sensor is disposed under the first displayregion of the substrate.

These and other objectives of the present disclosure will no doubtbecome obvious to those of ordinary skill in the art after reading thefollowing detailed description of the embodiment that is illustrated inthe various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically illustrates a top view of an electronic deviceaccording to an embodiment of the present disclosure.

FIG. 2 schematically illustrates cross-sectional views of the electronicdevice respectively taken along a line A-A′ and a line B-B′ of FIG. 1according to an embodiment of the present disclosure.

FIG. 3 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure.

FIG. 4 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure.

FIG. 5 schematically illustrates top views of the portions of thedisplay panel corresponding to the first display region and the seconddisplay region according to some embodiments of the present disclosure.

FIG. 6 schematically illustrates a cross-sectional view of the displaypanel taken along a line C-C′ of FIG. 5 .

FIG. 7 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure.

FIG. 8 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure.

FIG. 9 schematically illustrates a cross-sectional view of the displaypanel taken along a line D-D′ of FIG. 8 .

FIG. 10 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure.

FIG. 11 schematically illustrates top views of portions of a displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure.

FIG. 12 schematically illustrates a top view of a mesh unit and a bridgeunit according to some embodiments of the present disclosure.

FIG. 13 schematically illustrates top views of portions of a displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure.

FIG. 14 schematically illustrates top views of portions of the displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure.

FIG. 15 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure.

DETAILED DESCRIPTION

The contents of the present disclosure will be described in detail withreference to specific embodiments and drawings. It is noted that, forpurposes of illustrative clarity and being easily understood by thereaders, the following drawings may be simplified schematic diagrams,and elements therein may not be drawn to scale. The numbers and sizes ofthe elements in the drawings are just illustrative and are not intendedto limit the scope of the present disclosure.

Certain terms are used throughout the specification and the appendedclaims of the present disclosure to refer to specific elements. Thoseskilled in the art should understand that electronic equipmentmanufacturers may refer to an element by different names, and thisdocument does not intend to distinguish between elements that differ inname but not function. In the following description and claims, theterms “comprise”, “include” and “have” are open-ended fashion, so theyshould be interpreted as “including but not limited to . . . ”.

The ordinal numbers used in the specification and the appended claims,such as “first”, “second”, etc., are used to describe the elements ofthe claims. It does not mean that the element has any previous ordinalnumbers, nor does it represent the order of a certain element andanother element, or the sequence in a manufacturing method. Theseordinal numbers are just used to make a claimed element with a certainname be clearly distinguishable from another claimed element with thesame name. Thus, a first element mentioned in the specification may becalled a second element.

Spatially relative terms, such as “above”, “on”, “beneath”, “below”,“under”, “left”, “right”, “before”, “front”, “after”, “behind” and thelike, used in the following embodiments just refer to the directions inthe drawings and are not intended to limit the present disclosure. Itmay be understood that the elements in the drawings may be disposed inany kind of formation known by those skilled in the related art todescribe or illustrate the elements in a certain way. Furthermore, whenone element is mentioned to overlap another element, it may beunderstood that the element may partially or completely overlap theanother element.

In addition, when one element or layer is “on” or “above” anotherelement or layer, or is connected to another element or layer, it may beunderstood that the element or layer is directly on the another elementor layer, or is directly connected to the another element or layer, andalternatively another element or layer may be between the one element orlayer and the another element or layer (indirectly). On the contrary,when the element or layer is “directly on” the another element or layeror is “directly connected to” the another element or layer, there is nointervening element or layer between the element or layer and theanother element or layer.

As disclosed herein, the terms “approximately”, “about”, and“substantially” generally mean within 10%, 5%, 3%, 2%, 1%, or 0.5% ofthe reported numerical value or range. The quantity disclosed herein isan approximate quantity, that is, without a specific description of“approximately”, “about”, “substantially”, the quantity may stillinclude the meaning of “approximately”, “about”, and “substantially”.

It should be understood that according to the following embodiments,features of different embodiments may be replaced, recombined or mixedto constitute other embodiments without departing from the spirit of thepresent disclosure. The features of various embodiments may be mixedarbitrarily and used in different embodiments without departing from thespirit of the present disclosure or conflicting.

In the present disclosure, the length, thickness and width may bemeasured by using an optical microscope, an electron microscope, orother approaches, but not limited thereto.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by thoseskilled in the art. It should be understood that these terms, such asthose defined in commonly used dictionaries, should be interpreted ashaving meaning consistent with the relevant technology and thebackground or context of the present disclosure, and should not beinterpreted in an idealized or excessively formal way, unless there is aspecial definition in the embodiments of the present disclosure.

In the present disclosure, the electronic device may have a displayfunction and may optionally include an optical sensing, image detecting,touching sensing, or antenna function, other suitable functions or anycombination thereof, but not limited thereto. In some embodiments, theelectronic device may include tiled device, but not limited thereto. Theelectronic device may include liquid crystal molecule, light-emittingdiode (LED), quantum dots material, a fluorescent material, a phosphormaterial, other suitable materials, or any combination thereof, but notlimited thereto. The LED may for example include organic light-emittingdiode (OLED), micro light-emitting diode (micro-LED) or minilight-emitting diode (mini-LED), or quantum dot light-emitting diode(e.g., QLED or QDLED), but not limited thereto. In addition, theelectronic device may be a color display device or a single colordisplay device. The appearance of the electronic device may berectangular, circular, polygonal, a shape with curved edges, curved orother suitable shapes, but not limited thereto. The electronic devicemay optionally have peripheral systems such as a driving system, acontrol system, a light source system, a shelf system, etc.

Refer to FIG. 1 , which schematically illustrates a top view of anelectronic device according to an embodiment of the present disclosure.As shown in FIG. 1 , the electronic device 1 provided in this embodimentmay include a display panel 10 and an optical sensor 12, wherein thedisplay panel 10 may be used for displaying images, and the opticalsensor 12 may be used for detecting light. For example, the opticalsensor 12 may be used to detect visible light or invisible light. Theinvisible light may include, for example, infrared light, ultravioletlight, or other suitable light. In some embodiments, the optical sensor12 may be used to detect images, for example, including an image sensoror a plurality of light sensing units. The image sensor may include, forexample, a camera device, but not limited thereto. One of the lightsensing units may, for example, include photodiode, phototransistor, orother suitable light sensing element. In some embodiments, the opticalsensor 12 may be replaced with elements having other functions.

The display panel 10 is further detailed below. As shown in FIG. 1 , thedisplay panel 10 may include a substrate 14, in which the substrate 14may have a first display region DR1, and the optical sensor 12 may bedisposed in the first display region DR1 in a top view direction TD ofthe display panel 10. In some embodiments, the substrate 14 mayoptionally have a second display region DR2, but not limited thereto.For example, in the top view direction TD of the display panel 10, thesecond display region DR2 may surround the first display region DR1 orbe disposed on at least one side of the first display region DR1. Itshould be noted that the first display region DR1 in the followingdescription refers to a region overlapping a sensing region of theoptical sensor 12 that is capable of detecting light in the top viewdirection TD, and the second display region DR2 is located outside thefirst display region DR1 and overlaps light-emitting units 20 (whichwill be described in detailed below) in the top view direction TD. Insome embodiments, the substrate 14 may optionally have a peripheralregion PR disposed outside the first display region DR1 and the seconddisplay region DR2 and used for disposing peripheral elements or othersuitable elements of the display panel 10, but not limited to this. Thesubstrate 14 may include a transparent substrate, or may include aflexible or rigid substrate. For example, the substrate 14 may includeglass, quartz, plastic or other substrates, but not limited thereto.

For convenience of description, FIG. 1 further illustrates an enlargedschematic diagram of a region R1 of the display panel 10 located in thefirst display region DR1 in the top view direction TD on its rightportion, and a structure in the region R1 is as an example to representa structure of the display panel 10 corresponding to the first displayregion DR1. FIG. 1 further illustrates another enlarged schematicdiagram of a region R2 of the display panel 10 located in the seconddisplay region DR2 in the top view direction TD on its left portion, anda structure in the region R2 is as an example to represent a structureof the display panel 10 corresponding to the second display region DR2.The structures of the first display region DR1 and the second displayregion DR2 of present disclosure are not limited thereto. As shown inthe enlarged schematic diagram of the region R1 in FIG. 1 , the displaypanel 10 may further include a plurality of light-emitting units 16 anda plurality of mesh units 18, and the light-emitting units 16 and themesh units 18 may be disposed in the first display region DR1 in the topview direction TD of the display panel 10. In FIG. 1 , one of the meshunits 18 is as an example, but the number of the mesh units 18 of thepresent disclosure is not limited to this and may be plural, such asshown in FIG. 5 . Furthermore, the first display region DR1 may includea transparent area TR, and the light-emitting units 16 are locatedoutside the transparent area TR in the top view direction TD of thedisplay panel 10. It should be noted that, in the present disclosure,the transparent area TR refers to an area outside the light-emittingunits 16, and the term “area outside an element” refers to a region thatdoes not overlap the element in the top view direction TD of the displaypanel 10. In some embodiments, the top view direction TD of the displaypanel 10 may be, for example, a normal direction of an upper surface ofthe substrate 14 for disposing the light-emitting units 16 (e.g., theupper surface 14 a of the substrate 14 shown in FIG. 2 ).

Specifically, as shown in the enlarged schematic diagram of the regionR1 in FIG. 1 , each mesh unit 18 may have a mesh frame 18 a, and themesh frame 18 a may form a plurality of mesh openings 18 b. It should benoted that the mesh openings 18 b do not overlap any light-emitting unit16 in the top view direction TD of the display panel 10. The transparentarea TR may overlap at least one mesh opening 18 b in the top-viewdirection TD of the display panel 10. By doing this, portions of thedisplay panel 10 corresponding to the mesh openings 18 b may have highertransmittance, so that the optical sensor 12 corresponding to the firstdisplay region DR1 may detect light of higher intensity through the meshopenings 18 b, thereby improving the quality of the detected images.

In some embodiments, the mesh frame 18 a may further form a plurality ofmesh openings 18 c, and one of the mesh openings 18 c may overlap atleast one light-emitting unit 16 or at least one sub-pixel. As shown inFIG. 1 , one of the mesh openings 18 c may overlap a plurality oflight-emitting units 16 or a plurality of sub-pixels in the top viewdirection TD of the display panel 10. In the embodiment of FIG. 1 , thelight-emitting units 16 may include a light-emitting unit 16 a, alight-emitting unit 16 b and a light-emitting unit 16 c for generatinglight of different colors and serving as sub-pixels of different colors,respectively, but not limited thereto. For example, the light-emittingunit 16 a, the light-emitting unit 16 b, and the light-emitting unit 16c may be used to generate blue, green, and red light, respectively, butnot limited thereto. The embodiment of FIG. 1 takes a pixel arrangementof PenTile as an example, so that one pixel PX corresponding to thefirst display region DR1 may include one light-emitting unit 16 a, twolight-emitting units 16 b, and one light-emitting unit 16 c, and one ofthe mesh openings 18 c may overlap to one pixel PX, but not limited tothis. In some embodiments, the number, color and arrangement of thelight-emitting units 16 for forming the pixel PX may be adjustedaccording to requirements. In some embodiments, one of the mesh openings18 c may overlap one of the light-emitting units 16 or one of thesub-pixels, e.g., as shown in FIG. 5 .

In the embodiment of FIG. 1 , the mesh openings 18 b and the meshopenings 18 c may be alternately arranged along a horizontal directionHD1 and/or another horizontal direction HD2 in sequence. The horizontaldirection HD1 is different from the horizontal direction HD2. In oneembodiment, the horizontal direction HD1 may be, for example,perpendicular to the horizontal direction HD2 and parallel to an uppersurface of the substrate 14 (the upper surface 14 a of the substrate 14shown in FIG. 2 ), but not limited thereto. In other words, since themesh openings 18 c are openings that overlap the light-emitting units16, and the mesh openings 18 b are openings that do not overlap thelight-emitting units 16, the above arrangement of the mesh openings 18 band the mesh openings 18 c may increase distances between the pixels PXor sub-pixels, thereby reducing resolution of the portion of the displaypanel 10 corresponding to the first display region DR1. Accordingly, thearea of the transparent area TR of the first display region DR1 may beincreased, and/or the transmittance of the display panel 10corresponding to the first display region DR1 may be improved.

As shown in the enlarged schematic diagram of the region R2 in FIG. 1 ,the display panel 10 may further include a plurality of light-emittingunits 20 and a plurality of mesh units 22, wherein the light-emittingunits 20 and the mesh units 22 are disposed in the second display regionDR2 in the top view direction TD of the display panel 10. One of themesh units 22 may include a plurality of mesh openings 22 b, and one ofthe mesh openings 22 b may overlap at least one light-emitting unit 20in the top view direction TD. Specifically, each mesh unit 22 may have amesh frame 22 a, and the mesh frame 22 a may form a plurality of meshopenings 22 b. One of the mesh openings 22 b may overlap at least one ofthe light-emitting units 20 or at least one sub-pixel. As shown in FIG.1 , one of the mesh openings 22 b may overlap a plurality oflight-emitting units 20 in the top view direction TD of the displaypanel 10. In some embodiments, one of the mesh openings 22 b may overlapone of the light-emitting units 20 or one sub-pixel, but not limitedthereto. In the embodiment of FIG. 1 , the light-emitting units 20 mayinclude a light-emitting unit 20 a, a light-emitting unit 20 b and alight-emitting unit 20 c for generating light of different colors andserving as sub-pixels of different colors, respectively, but not limitedthereto. For example, the light-emitting unit 20 a, the light-emittingunit 20 b, and the light-emitting unit 20 c may be the same as thelight-emitting unit 16 a, the light-emitting unit 16 b, and thelight-emitting unit 16 c, respectively, but not limited thereto. Thearrangement of the light-emitting unit 20 a, the light-emitting unit 20b, and the light-emitting unit 20 c may be, for example, the same as thearrangement of the light-emitting unit 16 a, the light-emitting unit 16b, and the light-emitting unit 16 c, but not limited thereto. One of thepixels PX corresponding to the second display region DR2 may include onelight-emitting unit 20 a, two light-emitting units 20 b, and onelight-emitting unit 20 c. The arrangement of the pixels PX may include,for example, the arrangement of PenTile or other suitable arrangements.It should be noted that, mesh openings without overlapping thelight-emitting units 20 may not exist between any two adjacent meshopenings 22 b. In other words, resolution of a portion of the displaypanel 10 corresponding to the second display region DR2 may be greaterthan the resolution of the portion of the display panel 10 correspondingto the first display region DR1. The resolution of the portion of thedisplay panel 10 corresponding to the first display region DR1 may be,for example, half of the resolution of the portion of the display panel10 corresponding to the second display region DR2.

As shown in FIG. 1 , the mesh frame 18 a and the mesh frame 22 a mayhave conductive property, so that the mesh units 18 and the mesh units22 may respectively be used as sensing electrodes of a touch sensingdevice. For example, the mesh frame 18 a and the mesh frame 22 a mayinclude a metal material, in which the metal material includes, forexample, molybdenum, aluminum, or copper. The mesh frame 18 a and themesh frame 22 a may be, for example, formed of the same metal layer, butnot limited thereto. The mesh frame 18 a and the mesh frame 22 a may be,for example, a single-layer or multilayer structure. When the mesh frame18 a and the mesh frame 22 a are the multilayer structure, the meshframe 18 a and the mesh frame 22 a may, for example, include a stackedstructure of molybdenum/aluminum/molybdenum ormolybdenum/copper/molybdenum.

FIG. 2 schematically illustrates cross-sectional views of the electronicdevice respectively taken along a line A-A′ and a line B-B′ of FIG. 1according to an embodiment of the present disclosure. The schematiccross-sectional views shown in FIG. 2 are as an example of theelectronic device 1 in FIG. 1 , and the schematic cross-sectional viewsof the electronic device in FIG. 1 are not limited to the structureshown in FIG. 2 and may be adjusted according to types of the displaypanel and the touch sensing device. As shown in FIG. 2 , the opticalsensor 12 may be disposed under the first display region DR1 of thesubstrate 14, but not limited thereto. In addition, the display panel 10may include a circuit layer 24 disposed between the light-emitting units16 and the substrate 14 and between the light-emitting units 20 and thesubstrate 14. For example, the circuit layer 24 may include a pluralityof driving elements 26 for driving the light-emitting units 16 and thelight-emitting units 20 to generate light. The driving elements 26 mayinclude, for example, thin film transistors or other suitabletransistors, but not limited thereto. In some embodiments, the circuitlayer 24 may include switching elements (not shown), signal lines (notshown) and other suitable elements in addition to the driving elements26. The signal lines may include, for example, data lines, scan lines,common lines or other required signal lines.

In the embodiment of FIG. 2 , the driving elements 26 and the switchingelements may be, for example, top-gate type thin film transistors, andin this case, the circuit layer 24 may include a semiconductor layer 28,an insulating layer IN1, and a metal layer M1, an insulating layer IN2,a metal layer M2, an insulating layer IN3, and a planarization layer 30.The semiconductor layer 28 is disposed on the substrate 14 and mayinclude a plurality of semiconductor blocks 28 a serving as channellayers of the driving elements 26. The insulating layer IN1 may bedisposed on the semiconductor layer 28 and serve as a gate insulatinglayer of the driving elements 26. The metal layer M1 may be disposed onthe insulating layer IN1 and may include a plurality of gates G of thedriving elements 26 respectively disposed on the correspondingsemiconductor blocks 28 a. The insulating layer IN2 may be disposed onthe metal layer M1, and the insulating layer IN1 and the insulatinglayer IN2 may have a plurality of through holes. The metal layer M2 isdisposed on the insulating layer IN2 and includes source (drain)electrodes SD1 of the driving elements 26 and drain (source) electrodesSD2 of the driving elements 26, and the source (drain) electrodes SD1and the drain (source) electrodes S2 may be electrically connected tothe corresponding semiconductor blocks 28 a through the through holes ofthe insulating layer IN2 and the insulating layer IN1, respectively. Theinsulating layer IN3 and the planarization layer 30 may be sequentiallydisposed on the metal layer M2 and have a plurality of through holes.The light-emitting units 16 and the light-emitting units 20 may beelectrically connected to the corresponding driving elements 26 throughthe through holes of the planarization layer 30 and the insulating layerIN3, respectively. The metal layer M1 and the metal layer M2 may, forexample, include aluminum, molybdenum nitride, copper, titanium, othersuitable materials, or a combination thereof, but not limited thereto.The structure of the circuit layer 24 of the present disclosure is notlimited to this and may be adjusted according to the types of thedriving elements 26 and the switching elements. In some embodiments, thedriving elements 26 and the switching elements may be, for example,bottom-gate thin film transistors, or may be altered to be double gatetransistors or other suitable transistors based on requirements.

As shown in FIG. 2 , the display panel 10 may further include aninsulating layer IN4 disposed on the circuit layer 24, in which theinsulating layer IN4 may include a plurality of openings OP1, and thelight-emitting units 16 and the light-emitting units 20 may be disposedcorresponding to the openings OP1, respectively. In the embodiment ofFIG. 2 , the light-emitting units 16 and the light-emitting units 20 mayinclude organic light-emitting diodes as an example. In this case, eachof the light-emitting units 16 and the light-emitting units 20 mayinclude a first electrode 32, a light-emitting layer 34, and a secondelectrode 36. The first electrodes 32 may be disposed on theplanarization layer 30 and spaced apart from each other. The insulatinglayer IN4 may be disposed on the first electrodes 32 and theplanarization layer 30, and each of the first electrodes 32 may beexposed by the corresponding opening OP1. Also, each light-emittinglayer 34 may be disposed in the corresponding opening OP1 of theinsulating layer IN4, and each second electrode 36 may be disposed onthe corresponding light-emitting layer 34 and extend to be on theinsulating layer IN4. In the embodiment of FIG. 2 , the secondelectrodes 36 of the light-emitting units 16 and the light-emittingunits 20 may be formed of the same conductive layer CL, but not limitedthereto. The first electrode 32 and the second electrode 36 may be, forexample, an anode and a cathode of the organic light-emitting diode,respectively, but not limited thereto, and they may be interchanged witheach other. It should be noted that a region of one of thelight-emitting units 16 and the light-emitting units 20 may, forexample, be defined as a region where the first electrode 32, thelight-emitting layer 34 and the second electrode 36 overlap each otherin the top view direction TD. The light-emitting units 16 and thelight-emitting units 20 of the present disclosure are not limitedthereto. In some embodiments, the light-emitting units 16 and thelight-emitting units 20 may, for example, include LEDs, in which theLEDs may be, for example, LED chips or LED package structures. In thiscase, the region of one of the light-emitting units 16 and thelight-emitting units 20 may be defined as the region of the LED. In someembodiments, the insulating layer IN4 may include, for example, anorganic material or other suitable material, but not limited thereto.

As shown in FIG. 2 , the display panel 10 may further include a sealinglayer 38 disposed on the light-emitting units 16 and the light-emittingunits 20 to protect the light-emitting units 16 and the light-emittingunits 20. The sealing layer 38 may be a single-layer or multilayerstructure, in which the multilayer structure may be, for example, athree-layer structure (e.g., a bottom inorganic layer, a middle organiclayer, and a top inorganic layer), but not limited thereto. In someembodiments, the sealing layer 38 in the transparent area TR and thesealing layer 38 on the light-emitting units 16 and the light-emittingunits 20 may be composed of different structures or materials. In someembodiments, the display panel 10 may optionally further include aninsulating layer IN5 disposed on the sealing layer 38, but not limitedthereto. The mesh frame 18 a of the mesh unit 18 and the mesh frame 22 aof the mesh unit 20 may be disposed on the insulating layer IN5, and inthe top view direction TD, the mesh frame 18 a and the mesh frame 22 amay overlap the insulating layer IN4. In some embodiments, theinsulating layer IN1, the insulating layer IN2, the insulating layerIN3, and the insulating layer IN5 may include silicon oxide, siliconnitride, other suitable materials, or a combination thereof, but notlimited thereto.

In the embodiment of FIG. 2 , the second electrode 36, the insulatinglayer IN4 and the circuit layer 24 may have a plurality of openings OP2,and the sealing layer 38 may be disposed in the openings OP2. Theopenings OP2 may improve the transmittance of portions of the displaypanel 10 corresponding to the openings OP2. Specifically, each openingOP2 may overlap a corresponding one of the mesh openings 18 b in the topview direction TD. In some embodiments, one of the openings OP2 may notpenetrate through the circuit layer 24, and a depth of one of theopenings OP2 in the top view direction TD may be adjusted according torequirements. In some embodiments, the second electrode 36, theinsulating layer IN4 and the circuit layer 24 may not have the openingsOP2. In some embodiments, the sealing layer 38 in the openings OP2 andthe sealing layer 38 on the light-emitting units 16 and thelight-emitting units 20 may be composed of different structures ormaterials.

In some embodiments, as shown in FIG. 2 , the display panel 10 mayoptionally include a buffer layer 40 disposed between the substrate 14and the circuit layer 24. The buffer layer 40 may, for example, be usedto block moisture, oxygen, or ions from entering the circuit layer 24.The buffer layer 40 may be a single-layer or multilayer structure, and amaterial of the buffer layer 40 may include, for example, siliconnitride, silicon oxide, silicon oxynitride, aluminum oxide, resin, othersuitable materials, or a combination thereof, but not limited thereto.

FIG. 3 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure. As shown in FIG. 3 , in someembodiments, one of the mesh openings 18 c may overlap one of thelight-emitting units 16, but not limited thereto. In some embodiments,the corresponding relationship between the mesh openings 18 c and thelight-emitting units 16 shown in FIG. 3 may be adapted to theabove-mentioned corresponding relationship between the mesh openings 18c and the light-emitting units 16 and/or corresponding relationshipbetween the mesh openings 22 b and the light-emitting units 20 in FIG. 1.

In some embodiments, as shown in FIG. 3 , the mesh frame 18 a may havean outline in the top view direction TD of the display panel 10, and aportion 18 a 1 of the outline may be curved or arc-shaped. For example,the portion 18 a 1 of the outline may be located at a corner of a meshopening 18 b 1 of the mesh openings 18 b. In some embodiments, at leastone of the mesh openings 18 b and/or at least one of the mesh openings18 c of at least one mesh frame 18 a and/or at least one of the meshopenings 22 b of at least one mesh frame 22 a may have curved orarc-shaped outline, but not limited thereto. In some embodiments, atleast one mesh opening 18 b 4 of the mesh frame 18 a may have apolygonal shape (not including curved or arc-shaped outline) in the topview direction TD, and for example, an angle between any two sides ofthe mesh opening 18 b 4 connected to each other may be greater than 90degrees, but not limited thereto. In some embodiments, at least one ofthe mesh openings 18 b and/or at least one of the mesh openings 18 c ofat least one mesh frame 18 a and/or at least one of the mesh openings 22b of at least one mesh frame 22 a may be polygonal, but not limitedthereto. In some embodiments, the curved or arc-shaped outline and/orpolygonal mesh opening 18 b may be adapted to the mesh openings 18 b,the mesh openings 18 c, and/or the mesh openings 22 b of theabove-described embodiments and/or at least one mesh opening in thefollowing contents.

In some embodiments, as shown in FIG. 3 , sizes of the mesh openings 18b may be adjusted according to requirements. For example, in the sameunit area, the number of the mesh opening 18 b 1, the number of the meshopenings 18 b 2, and the number of mesh openings 18 b 3 may be differentfrom each other. In other words, in the same unit area, an overlappingarea of a portion of the mesh frame 18 a corresponding to the meshopening 18 b 1 and the transparent area TR, an overlapping area ofanother portion of the mesh frame 18 a corresponding to one of the meshopenings 18 b 2 and the transparent area TR, and an overlapping area ofanother portion of the mesh frame 18 a corresponding to one of the meshopenings 18 b 3 and the transparent area TR may be different from eachother to adjust the transmittance of the display panel 10. For example,the number of the mesh openings 18 b located between two adjacent pixelsarranged along the horizontal direction HD1 or the horizontal directionHD2 may be at least one.

FIG. 4 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure. As shown in FIG. 4 , a width W1of one of the mesh openings 18 b and a width W2 of one of the meshopenings 18 c may be the same or different. For example, a ratio of thewidth W1 of one of the mesh openings 18 b to the width W2 of one of themesh openings 18 c may be greater than or equal to 1.01 and less than orequal to 5 (1.01≤W1/W2≤5), or may be greater than or equal to 1.01 andless than or equal to 3 (1.01≤W1/W2≤3). It should be noted that, thewidth W1 of the mesh opening 18 b and the width W2 of the mesh opening18 c may be obtained by the following method. The mesh opening 18 b 5and the mesh opening 18 c 1 are as an example, and a virtual line V1extending along an arrangement direction of the mesh opening 18 b 5 andthe mesh opening 18 c 1 (e.g., the horizontal direction HD1) is locatedfirst, in which the virtual line V1 crosses two opposite sides S1 of themesh opening 18 b 5 and two opposite sides S2 of the mesh opening 18 c1. Then, a center point P of one of the sides S1 of the mesh opening 18b 5 and the sides S2 of the mesh opening 18 c 1 may be obtained. One ofthe sides S2 of the mesh opening 18 c 1 is as an example, and a point athalf of length of the side S2 may be obtained, which is the center pointP. Then, the virtual line V1 is set to pass through the center point P.In this case, the length of the virtual line V1 crossing the meshopening 18 b 5 is measured to obtain the width W1 of the mesh opening 18b 5, and the virtual line V1 crossing the mesh opening 18 c 1 ismeasured to obtain the width W2 of the mesh opening 18 c 1. When thewidth W1 of the mesh opening 18 b 5 is different from the width W2 ofthe mesh opening 18 c 1, although the positions of the virtual line V1crossing the sides S1 and the sides S2 may be different during differentmeasurements, all the calculated ratios of the width W1 of the meshopening 18 b 5 to the width W2 of the mesh opening 18 c 1 in differentcases may be within the above-mentioned ratio range.

In some embodiments, as shown in FIG. 4 , when the width W1 of the meshopening 18 b 5 is different from the width W2 of the mesh opening 18 c1, the width W1 of another mesh opening 18 b 6 may be the same as thewidth W2 of another mesh opening 18 c 2. The width W1 of the meshopening 18 b 6 and the width W2 of the mesh opening 18 c 2 may beobtained, for example, through a virtual line V2, but not limitedthereto. In some embodiments, as shown in FIG. 1 , the width W1 of eachmesh opening 18 b may be the same as the width W2 of each mesh opening18 c. In some embodiments, the width W1 of each mesh opening 18 b may bedifferent from the width W2 of each mesh opening 18 c, but the presentdisclosure is not limited thereto.

FIG. 5 schematically illustrates top views of the portions of thedisplay panel corresponding to the first display region and the seconddisplay region according to some embodiments of the present disclosure,and FIG. 6 schematically illustrates a cross-sectional view of thedisplay panel taken along a line C-C′ of FIG. 5 . As shown in FIG. 5 ,the display panel 10 may include a plurality of mesh units 18. The meshunits 18 may be arranged, for example, in the horizontal direction HD3.The display panel 10 may further include a plurality of bridge units 42,in which each bridge unit 42 is disposed between two adjacent mesh units18 and used for electrically connecting these two adjacent mesh units 18to each other. The mesh units 18 and the bridge units 42 may beelectrically connected to form a plurality of electrode strings ES1electrically insulated from each other, in which the electrode stringsES1 may, for example, extend along the horizontal direction HD3. In theembodiment of FIG. 5 , one of the bridge units 42 may have astrip-shaped mesh 42 a, and the strip-shaped mesh 42 a may include aplurality of mesh openings 42 b. The mesh openings 42 b may be arrangedalong the horizontal direction HD3 and overlap at least onelight-emitting unit 16 in the top view direction TD. The number and sizeof the mesh openings 42 b may be adjusted according to the distancebetween two adjacent mesh units 18.

As shown in FIG. 5 , the display panel 10 may further include aplurality of mesh units 44 disposed on the first display region DR1 ofthe substrate 14, in which the mesh units 44 and the mesh units 18 maybe arranged in different directions. For example, when the mesh units 18are arranged along the horizontal direction HD3, the mesh units 44 maybe arranged along the horizontal direction HD4, but not limited thereto.The horizontal direction HD3 may be different from the horizontaldirection HD4. For example, the horizontal direction HD3 may beperpendicular to the horizontal direction HD4, but not limited thereto.In the embodiment of FIG. 5 , the horizontal direction HD3 and thehorizontal direction HD4 may be different from the arrangement directionof the mesh openings 18 b and the arrangement direction of the meshopenings 18 c (e.g., the horizontal direction HD1 or the horizontaldirection HD2), but not limited thereto. In addition, each mesh unit 44may have a mesh frame 44 a, and each mesh frame 44 a may form aplurality of mesh openings 44 b and a plurality of mesh openings 44 c,in which the mesh openings 44 b may overlap the transparent area TR inthe top view direction TD, and one of the mesh openings 44 c may overlapat least one light-emitting unit 16 or one sub-pixel in the top viewdirection TD, but not limited thereto. In some embodiments, one of meshopenings 44 b may adopt any one of the mesh openings 18 b in any one ofthe embodiments mentioned above or the embodiments in the followingcontents, and one of mesh openings 44 c may adopt any one of the meshopenings 18 c in any one of the embodiments mentioned above or theembodiments in the following contents, so they are not detailedredundantly. In some embodiments, taking one of the mesh units 18 andone of the mesh units 44 as an example, the mesh openings 18 b and themesh openings 44 b may be different in numbers, and/or the mesh openings18 c and the mesh openings 44 c may be different in numbers. In someembodiments, one of the mesh units 18 and one of the mesh units 44 maybe different in mesh pattern.

As shown in FIG. 5 , the display panel 10 may further include aplurality of bridge units 46, in which each bridge unit 46 is disposedbetween two adjacent mesh units 44 and used for electrically connectingthese two adjacent mesh units 44 to each other. The mesh units 44 andthe bridge units 46 may be electrically connected to form a plurality ofelectrode strings ES2 electrically insulated from each other, in whichthe electrode strings ES2 may extend along the horizontal direction HD4,and the electrode strings ES2 may overlap the electrode strings ES1 inthe top view direction TD. In the embodiment of FIG. 5 , one of thebridge units 46 may have a strip-shaped mesh 46 a, and the strip-shapedmesh 46 a may include a plurality of mesh openings 46 b. In someembodiments, one of the mesh openings 46 b may overlap at least one ofthe light-emitting units 16 in the top view direction TD, but notlimited thereto. For example, the mesh openings 46 b may be arrangedalong the horizontal direction HD4, but not limited thereto. It shouldbe noted that one of the bridging units 46 may overlap one of thebridging units 42 in the top view direction TD, and a dielectric layer(e.g., the insulating layer IN6 shown in FIG. 6 ) may be disposedbetween the bridging unit 46 and the bridging unit 42 to electricallyinsulate the bridge unit 42 from the bridge unit 46. Therefore, theelectrode strings ES2 may have capacitive coupling with the electrodestring ES1, thereby forming a touch sensing device corresponding to thefirst display region DR1.

Specifically, as shown in FIG. 6 , the display panel 10 may include aninsulating layer IN6 and an insulating layer IN7 sequentially disposedon the insulating layer IN5, and the strip-shaped mesh 46 a of thebridge unit 46 may include a first layer 46 a 1 and a second layer 46 a2. In the embodiment of FIG. 6 , the first layer 46 a 1 and thestrip-shaped mesh 42 a may be disposed on the insulating layer IN5 andmay be separated from each other, such that the first layer 46 a 1 andthe strip-shaped mesh 42 a may be electrically insulated from eachother. For example, the first layer 46 a 1 and the strip-shaped mesh 42a may include the same conductive material or be formed of the sameconductive layer CL1. The insulating layer IN6 may be disposed on thefirst layer 46 a 1 and the strip-shaped mesh 42 a, and the insulatinglayer IN6 may have an opening OP3 (or a through hole) exposing a part ofthe first layer 46 a 1. The second layer 46 a 2 may be disposed on theinsulating layer IN6 and extend through the opening OP3 to contact (orbe electrically connected to) the first layer 46 a 1. The second layer46 a 2 may be formed of, for example, the conductive layer CL2. Sincethe strip-shaped mesh 42 a is disposed between the insulating layer IN5and the insulating layer IN6, the second layer 46 a 2 disposed on theinsulating layer IN6 may overlap the strip-shaped mesh 42 a in the topview direction TD and electrically connect the adjacent mesh units 44 toeach other. In some embodiments, the insulating layer IN6 and theinsulating layer IN7 may include, for example, silicon oxide, siliconnitride, other suitable materials, a combination thereof, but notlimited thereto. The structures of the strip-shaped mesh 42 a and thestrip-shaped mesh 46 a of the present disclosure are not limited to thementioned above. In some embodiments, the strip-shaped mesh 42 a and thesecond layer 46 a 2 of the striped mesh 46 a may include the sameconductive material or different conductive materials. In someembodiments, the second layer 46 a 2 may be formed of the conductivelayer CL1, and the first layer 46 a 1 and the strip-shaped mesh 42 a maybe formed of the conductive layer CL2. In other words, the first layer46 a 1 may be disposed on the second layer 46 a 2, and the presentdisclosure is not limited thereto.

Refer to the second display region DR2 in FIG. 5 again. The displaypanel 10 may further include a plurality of mesh units 48 disposed onthe second display region DR2 of the substrate 14. The mesh unit 48 mayhave a mesh frame 48 a, and the mesh frame 48 a may form a plurality ofmesh openings 48 b, in which one of the mesh openings 48 b may overlapat least one light-emitting unit 20 in the top view direction TD. In theembodiment of FIG. 5 , the mesh unit 48 and the mesh unit 22 may, forexample, have the same mesh pattern, but not limited thereto.

In addition, as shown in FIG. 5 , the display panel 10 may furtherinclude a plurality of bridge units 50 and a plurality of bridge units52. The bridge units 50 may be electrically connected to adjacent meshunits 22, such that the mesh units 22 and the bridge units 50 may form aplurality of electrode strings ES3 electrically insulated from eachother. The bridge units 52 may be electrically connected to adjacentmesh units 48, such that the mesh units 48 and the bridge units 52 mayform a plurality of electrode strings ES4 electrically insulated fromeach other, and the electrode strings ES4 may overlap the electrodestrings ES3 in the top view direction TD. The electrode strings ES3 mayhave capacitive coupling with the electrode strings ES4, thereby forminga touch sensing device corresponding to the second display region DR2.Therefore, the touch sensing device may be, for example, a mutualcapacitance type, but not limited thereto. It should be noted that, inFIG. 5 and following FIG. 7 , FIG. 8 , and FIG. 10 , in order to clearlyshow the bridge units 46 and the bridge units 52, the frame lines of thebridge units 46 and the bridge units 52 are drawn to be thicker than theframe lines of the bridge units 42 and the bridge units 50, but thepresent disclosure is not limited to this.

In the embodiment of FIG. 5 , the electrode strings ES3 and theelectrode strings ES4 extend along different directions respectively,for example, extend along the horizontal direction HD3 and thehorizontal direction HD4 respectively. One of the bridge units 50 mayinclude a plurality of mesh openings 50 b, and each mesh opening 50 bmay overlap at least one light-emitting unit 20 in the top viewdirection TD. The mesh openings 50 b may be arranged along thehorizontal direction HD3, but not limited thereto. One of the bridgeunits 52 may include a plurality of mesh openings 52 b, and each meshopening 52 b may overlap at least one light-emitting unit 20 in the topview direction TD. The mesh openings 52 b may be arranged along thehorizontal direction HD4, but not limited thereto. In the embodiment ofFIG. 5 , a size of one of the mesh openings 50 b may be the same as asize of one of the mesh openings 52 b, but not limited thereto.According to the requirements of the distances between the adjacent meshunits 22 and the distances between the adjacent mesh units 48, thenumber of the mesh openings 50 b of one of the bridging units 50 may bedifferent from the number of the mesh openings 42 b of one of thebridging units 42, and/or the number of mesh openings 52 b of the bridgeunit 52 may be different from the number of mesh openings 46 b of thebridge unit 46, but not limited thereto. In some embodiments, when oneof the electrode strings ES3 and a corresponding one of the electrodestrings ES1 are arranged along the same line, this electrode string ES3and the corresponding electrode string ES1 may be electrically connectedto each other. Similarly, when one of the electrode strings ES4 and acorresponding one of the electrode strings ES2 are arranged along thesame line, this electrode string ES4 and the corresponding electrodestring ES2 may be electrically connected to each other.

FIG. 7 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure. As shown in a left portionLP1 of FIG. 7 , the mesh openings 18 b of one of the mesh units 18 andthe mesh openings 44 b of one of the mesh units 44 may have the samenumber. For example, one of the mesh units 18 and one of the mesh units44 may have the same or similar mesh pattern. In this case, since themesh openings 18 b of the mesh unit 18 and the mesh openings 44 b of themesh unit 44 need to match the design of the light-emitting units 16 inthe top view direction TD, the distance between adjacent two of the meshunits 18 may be different from the distance between adjacent two of themesh units 44, but not limited thereto.

As shown in a right portion RP1 of FIG. 7 , the mesh frame 18 a of oneof the mesh units 18 may have a portion P1 corresponding to one of themesh openings 18 b and a portion P2 corresponding to one of the meshopenings 18 c, and a width W3 of the portion P1 may be greater than awidth W4 of the portion P2. In some embodiments, the mesh frame 44 a ofone of the mesh units 44 may have a portion P3 corresponding to one ofthe mesh openings 44 b and a portion P4 corresponding to one of the meshopenings 44 c, and a width W5 of the portion P3 may be greater than awidth W6 of the portion P4. The case that the width W3 of the portion P1is greater than the width W4 of the portion P2 and the case that thewidth W5 of the portion P3 is greater than the width W6 of the portionP4 may exist at the same time, or one of them may exist. Also, at leastone of these cases may be adapted to the mesh units 18 and/or mesh units44 of any other embodiment. In some embodiments, all of the mesh units18 and the mesh units 44 of the display panel may adopt the left portionLP1 of FIG. 7 or the right portion RP1 of FIG. 7 or adopt both the leftportion LP1 of FIG. 7 and the right portion RP1 of FIG. 7 , but notlimited thereto. In some embodiments, the left portion LP1 and/or theright portion RP1 of FIG. 7 may be adapted to any one of the embodimentsof FIG. 1 to FIG. 6 and FIG. 8 to FIG. 12 mentioned above.

FIG. 8 schematically illustrates a top view of a portion of the displaypanel corresponding to the first display region according to someembodiments of the present disclosure, and FIG. 9 schematicallyillustrates a cross-sectional view of the display panel taken along aline D-D′ of FIG. 8 . As shown in FIG. 8 and FIG. 9 , in someembodiments, the second electrodes 36 of different light-emitting units16 may be optionally formed of different conductive layers CL3 and CL4.Specifically, the display panel 10 may include a plurality of conductiveblocks 36 a and a plurality of conductive blocks 36 b, in which theconductive blocks 36 a are separated from each other and are formed ofthe conductive layer CL3, and the conductive blocks 36 b are separatedfrom each other and are formed of the conductive layer CL4. In theembodiment of FIG. 8 , the conductive blocks 36 a and the conductiveblocks 36 b may be arranged in an array. The conductive blocks 36 a andthe conductive blocks 36 b of the same row may be alternately arrangedalong the horizontal direction HD3, and the conductive blocks 36 a andthe conductive blocks 36 b of the same column may be alternatelyarranged along the horizontal direction HD4, but the arrangement of theconductive blocks 36 a and the conductive blocks 36 b of the presentdisclosure is not limited thereto. One of the conductive blocks 36 b maybe disposed between two adjacent conductive blocks 36 a, and one of theconductive blocks 36 b may overlap the conductive blocks 36 a adjacentthereto in the top view direction TD, such that two adjacent conductiveblocks 36 a and two adjacent conductive blocks 36 b may form an openingOP4 that is surrounded by these two adjacent conductive blocks 36 a andthese two adjacent conductive blocks 36 b. Accordingly, the conductiveblocks 36 a and the conductive blocks 36 b may form a plurality ofopenings OP4. In the top view direction TD, the mesh openings 18 b andthe mesh openings 44 b may respectively overlap the openings OP4. Thesize of one of the mesh openings 18 b and/or the size of one of the meshopenings 44 b may be, for example, greater than a size of one of theopenings OP4. In the embodiment of FIG. 8 , the conductive blocks 36 aand the conductive blocks 36 b may be, for example, rhombus or othersuitable shapes.

In the embodiment of FIG. 9 , the conductive blocks 36 b may extend tobe on the adjacent conductive blocks 36 a and to be electricallyconnected to the conductive blocks 36 a adjacent thereto, but notlimited thereto. One of the conductive blocks 36 a and one of theconductive blocks 36 b adjacent thereto may have an overlapping portionin the top view direction TD, and the overlapping portion may overlapthe mesh frame 18 a or the mesh frame 44 a in the top view direction TD.

In the embodiment of FIG. 8 and FIG. 9 , one of the conductive blocks 36a may overlap one pixel PX1 in the top view direction TD, and one of theconductive blocks 36 b may overlap one pixel PX2 in the top viewdirection TD. In other words, the second electrodes 36 of thelight-emitting units of the pixel PX1 may be formed of one of theconductive blocks 36 a, and the second electrodes 36 of thelight-emitting units of the pixel PX2 may be formed of one of theconductive blocks 36 b. A size of one of the conductive blocks 36 a anda size of one of the conductive blocks 36 b of the present disclosureare not limited to the mentioned above. In some embodiments, one of theconductive blocks 36 a and/or one of the conductive blocks 36 b mayserve as the second electrode 36 of at least one light-emitting unit 16.

It should be noted that, it is hard to form the openings OP4 by etchingthe second electrodes 36 of the light-emitting units 16, or a problem ofuneven quality of the second electrodes 36 easily occurs. In thisembodiment, the conductive blocks 36 a and the conductive blocks 36 bmay be formed by, for example, using a physical deposition process(e.g., evaporation) with a metal mask and sequentially forming theconductive layer CL3 and the conductive layer CL4 on the light-emittinglayer 34 and the insulating layer IN4 through openings of the metalmask. Accordingly, the method of separately forming the conductiveblocks 36 a and the conductive blocks 36 b that are staggered to formthe openings OP4 does not require etching the second electrodes 36,thereby improving the quality of the light-emitting units 16 and thequality of the openings OP4.

In some embodiments, as shown in FIG. 8 , the size of one of the meshopenings 46 b of the bridge unit 46 may be optionally greater than thesize of one of the openings OP4 or one of the mesh openings 42 b of thebridge unit 42, but not limited thereto. In some embodiments, the sizeof one of the mesh openings 46 b of the bridge unit 46 may be less thanthe size of one of the openings OP4. The size of one of the meshopenings 46 b shown in FIG. 8 may be adapted to at least one meshopening 46 b of other embodiments.

FIG. 10 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure. As shown in a left portionLP2 of FIG. 10 , in some embodiments, the strip-shaped mesh 42 a of thebridge unit 42 may include a strip-shaped part SP and at least one gridframe 42 a 1, and the grid frame 42 a 1 may be electrically connected tothe strip-shaped part SP and one of the mesh units 18 to reduceresistance of the bridge unit 42. The grid frame 42 a 1 may have oneopening 42 b 1, and the opening 42 b 1 may not overlap thelight-emitting units 16 in the top view direction TD. In the embodimentof FIG. 10 , the strip-shaped part SP may, for example, be the same asthe left portion LP1 of FIG. 7 or the strip-shaped mesh 42 a of FIG. 5 .As an example, the strip-shaped part SP may include six mesh frames 42 a3 arranged along an extending direction of the strip-shaped mesh 42 a(e.g., the horizontal direction HD3) and electrically connected to twoadjacent mesh units 18. The difference between the strip-shaped mesh 42a in FIG. 10 and the strip-shaped mesh 42 a in the left portion LP1 ofFIG. 7 is that the strip-shaped mesh 42 a may further include four gridframes 42 a 1, and one of which is electrically connected to one side ofthe strip-shaped part SP and a corresponding one of the mesh units 18,but not limited thereto. In some embodiments, the strip-shaped mesh 42 amay further include at least one grid frame 42 a 2 electricallyconnected to one side of the strip-shaped part SP. The grid frame 42 a 2may have an opening 42 b 2, and the opening 42 b 2 may overlap at leastone light-emitting unit 16 in the top view direction TD. In theembodiment of FIG. 10 , the strip-shaped mesh 42 a may include four gridframes 42 a 2, in which each of the grid frames 42 a 2 may have anopening 42 b 2, and one of the openings 42 b 2 may overlap onelight-emitting unit 16 in the top view direction TD. In someembodiments, the grid frame 42 a 1 and/or the grid frame 42 a 2 in theleft portion LP2 of FIG. 10 may be adapted to the right portion RP2 ofFIG. 10 or other embodiments.

As shown in the right portion RP2 of FIG. 10 , in some embodiments, oneof the mesh openings 46 b of the strip-shaped mesh 46 a may overlap onelight-emitting unit 16 in the top view direction TD. In the embodimentof FIG. 10 , the strip-shaped mesh 46 a may optionally further includeat least one grid frame P5, and the grid frame P5 may have an opening 46b 1 which may not overlap the light-emitting units 16 in the top viewdirection TD, but not limited thereto. In some embodiments, the gridframe P5 in the right portion RP2 of FIG. 10 may be adapted to the leftportion LP2 of FIG. 10 or other embodiments.

FIG. 11 schematically illustrates top views of portions of a displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure. In orderto clearly show the mesh units 18, the mesh units 44, the mesh units 22,the mesh units 48, the bridge unit 42, the bridge unit 46, the bridgeunit 50 and the bridge unit 52 of the display panel 10, thelight-emitting units 16 and the light-emitting units 20 are omitted inFIG. 11 , but not limited thereto. As shown in FIG. 11 , the displaypanel 10 may include two bridge units 46 connected between adjacent twoof the mesh units 44. In the embodiment of FIG. 11 , the bridge units 46may not overlap the bridge unit 42 in the top view direction TD butoverlap one of the mesh units 18 adjacent thereto, but not limitedthereto. Since the bridge units 46 and the mesh units 18 may be formedof different conductive layers (e.g., the conductive layer CL1 and theconductive layer CL2 shown in FIG. 6 ), and a dielectric layer (e.g.,the insulating layer IN6 shown in FIG. 6 ) may be disposed between thebridge unit 46 and the mesh units 18, the bridge unit 46 and the meshunits 18 may be electrically insulated from each other. In someembodiments, the bridge units 46 may optionally be symmetrical to eachother with respect to the arrangement direction of the mesh units 44(e.g., the horizontal direction HD4), but not limited thereto. In someembodiments, one of the bridge units 46 may, for example, overlap atleast one mesh opening 18 b in the top view direction TD, but notlimited thereto.

In addition, as shown in FIG. 11 , the display panel 10 may furtherinclude two bridge units 52 connected between adjacent two of the meshunits 48. In the embodiment of FIG. 11 , the bridge units 52 may notoverlap the bridge units 50 in the top view direction TD, but overlapthe mesh units 22 adjacent thereto, but not limited thereto.Furthermore, the bridge units 52 and the mesh units 22 may be formed ofdifferent conductive layers (e.g., the conductive layer CL1 and theconductive layer CL2 shown in FIG. 6 ) and may be electrically insulatedfrom each other through the dielectric layer (e.g., the insulating layerIN6 shown in FIG. 6 ).

FIG. 12 schematically illustrates a top view of a mesh unit and a bridgeunit according to some embodiments of the present disclosure. As shownin FIG. 12 , in some embodiments, the bridge units 46 may beasymmetrical to each other with respect to the arrangement direction ofthe mesh units 44 (e.g., the horizontal direction HD4).

FIG. 13 schematically illustrates top views of portions of a displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure. As shownin FIG. 13 , the display panel 10 may include a plurality of transparentsensing electrodes 54, a plurality of bridging lines 56, a plurality oftransparent sensing electrodes 58 and a plurality of bridging lines 60disposed on the first display region DR1 of the substrate 14. Thetransparent sensing electrodes 54 and the bridge lines 56 may beelectrically connected to form a plurality of electrode strings ES1electrically insulated from each other, and the transparent sensingelectrodes 58 and the bridge lines 60 may be electrically connected toform a plurality of electrode strings ES2 electrically insulated fromeach other. In the top view direction TD, the electrode strings ES1 mayoverlap the electrode strings ES2. It should be noted that one of thetransparent sensing electrodes 54 may have a plurality of openings OP5,and one of the transparent sensing electrodes 58 may have a plurality ofopenings OP6. In FIG. 13 , one of the openings OP5 may be similar to orthe same as one of the mesh openings 18 b shown in FIG. 5 , and one ofthe openings OP5 may overlap the transparent area TR or may not overlapthe light-emitting units (e.g., the light-emitting units 16 shown inFIG. 5 ) in the top view direction TD. One of the openings OP6 may besimilar to or the same as one of the mesh openings 44 b shown in FIG. 5, and one of the openings OP6 may overlap the transparent area TR or maynot overlap the light-emitting units in the top view direction TD. Inorder to clearly show the electrode strings ES1, the electrode stringsES2, the electrode strings ES3 and the electrode strings ES4 of thedisplay panel 10, the light-emitting units 16 and the light-emittingunits 20 are omitted in FIG. 13 , but not limited thereto.

As shown in FIG. 13 , the display panel 10 may further include aplurality of transparent sensing electrodes 62, a plurality of bridgelines 64, a plurality of transparent sensing electrodes 66, and aplurality of bridge lines 68 disposed on the second display region DR2of the substrate 14. The transparent sensing electrodes 62 and thebridge lines 64 may be electrically connected to form a plurality ofelectrode strings ES3 electrically insulated from each other, and thetransparent sensing electrodes 66 and the bridge lines 68 may beelectrically connected to form a plurality of electrode strings ES4electrically insulated from each other. In the top view direction TD,the electrode strings ES3 may overlap the electrode strings ES4. In someembodiments, when one of the electrode strings ES3 and a correspondingone of the electrode strings ES1 are arranged along the same line, theelectrode string ES3 and the corresponding electrode string ES1 may beelectrically connected to each other. Similarly, when one of theelectrode strings ES4 and a corresponding one of the electrode stringsES2 are arranged along the same line, the electrode string ES4 and thecorresponding electrode string ES2 may be electrically connected to eachother.

In some embodiments, the transparent sensing electrodes 54 and thebridge lines 56 may be formed of a transparent conductive layer, and thetransparent sensing electrodes 58 and the bridge lines 60 may be formedof another transparent conductive layer. A dielectric layer (e.g., theinsulating layer IN6 shown in FIG. 6 ) may be disposed between these twotransparent conductive layers, but not limited thereto. In someembodiments, the transparent sensing electrodes 54 and the transparentsensing electrodes 58 may be formed of the same transparent conductivelayer as one of the bridge lines 56 and the bridge lines 60, and theother one of the bridge lines 56 and the bridge lines 60 may be formedof another transparent conductive layer. Similarly, in some embodiments,the forming method of the transparent sensing electrodes 62, thebridging lines 64, the transparent sensing electrodes 66, and thebridging lines 68 may be similar to or the same as that of thetransparent sensing electrodes 54, the transparent sensing electrodes58, the bridging lines 56 and the bridging lines 60 and will not beredundantly detailed. The transparent conductive layer may, for example,include indium tin oxide, indium zinc oxide, or other suitabletransparent conductive materials.

FIG. 14 schematically illustrates top views of portions of the displaypanel corresponding to the first display region and the second displayregion according to some embodiments of the present disclosure. As shownin FIG. 14 , in some embodiments, the touch sensing device may beself-capacitance type. Specifically, the display panel 10 may include aplurality of transparent sensing electrodes 72 and a plurality oftransparent sensing electrodes 70, in which the transparent sensingelectrodes 72 are separated from each other and disposed on the firstdisplay region DR1 of the substrate 14, and the transparent sensingelectrodes 70 are separated from each other and disposed on the seconddisplay region DR2 of the substrate 14. It should be noted that one ofthe transparent sensing electrodes 72 may have a plurality of openingsOP7. In FIG. 14 , one of the openings OP7 may be similar to or the sameas one of the mesh openings 18 b of FIG. 5 and may not overlap thelight-emitting units in the top view direction TD. The transparentsensing electrodes 72 may be arranged in an array, for example. Thetransparent sensing electrodes 70 may also be arranged in an array, forexample. In addition, the transparent sensing electrodes 72 and thetransparent sensing electrodes 70 may be separately electricallyconnected to elements or pads in the peripheral region throughconnecting lines (not shown). In some embodiments, the transparentsensing electrodes 72 and the transparent sensing electrodes 70 mayinclude, for example, indium tin oxide, indium zinc oxide, or othersuitable transparent conductive materials.

FIG. 15 schematically illustrates top views of different portions of thedisplay panel corresponding to the first display region according tosome embodiments of the present disclosure. As shown in FIG. 15 , in thedisplay panel 10 of some embodiments, when the size of one of the meshopenings 18 b is greater than the size of one of the mesh openings 18 c,the second electrodes of different light-emitting units 16 may be formedof different conductive layers CL3 and CL4. Specifically, the displaypanel 10 may include a plurality of conductive blocks 36 a and aplurality of conductive blocks 36 b, in which the conductive blocks 36 aare separated from each other and formed of the conductive layer CL3,and the conductive blocks 36 b are separated from each other and formedof the conductive layer CL4. The conductive blocks 36 a and theconductive blocks 36 b may form a plurality of openings OP4. Each meshopening 18 b or a corresponding mesh opening (e.g., the mesh opening 44b shown in FIG. 5 ) may overlap a corresponding one of the openings OP4in the top view direction TD. Two adjacent conductive blocks 36 a may beconnected to each other through two adjacent conductive blocks 36 b,such that these two adjacent conductive blocks 36 a and these twoadjacent conductive blocks 36 b may surround one of the openings OP4. Inthe embodiment of FIG. 15 , a top-view shape of one of the conductiveblocks 36 a and a top-view shape of one of the conductive blocks 36 bmay be, for example, I-shaped, so that the size of one of the formedopenings OP4 may be close to the size of one of the mesh openings 18 b,but not limited thereto. In the top view direction TD, the conductiveblocks 36 a and the conductive blocks 36 b may be arranged in an arrayand staggered. In other words, the conductive blocks 36 a of each columnand the conductive blocks 36 b of each column are alternately arrangedalong the horizontal direction HD3, and the conductive blocks 36 a ofeach row and the conductive blocks 36 b of each row are alternatelyarranged along the horizontal direction HD4.

In the portion P6 and the portion P7 of FIG. 15 , one of the meshopenings 18 c may overlap one of the pixels PX, and the conductiveblocks 36 a and the conductive blocks 36 b may serve as the secondelectrodes of the pixels PX, respectively. In the portion P6 of FIG. 15, the light-emitting units 16 of one of the pixels PX corresponding tothe same one of the mesh openings 18 c may be arranged along the samedirection, for example, along the horizontal direction HD4, but notlimited thereto. In the portion P7 of FIG. 15 , the light-emitting units16 of one of the pixels PX corresponding to the same one of the meshopenings 18 c may be arranged in an array, but not limited thereto. Inthe portion P8 of FIG. 15 , one of the mesh openings 18 c may overlapone of the light-emitting units 16 or one of the sub-pixels, and one ofthe conductive blocks 36 a and the conductive blocks 36 b may serve asthe second electrode of a corresponding one of the first light-emittingunits 16 or the sub-pixels. In some embodiments, all of the arrangementof the light-emitting units 16 and the corresponding relationshipbetween the light-emitting units 16 and the corresponding mesh openings18 c of the display panel 10 may adopt a design of one of the portionP6, the portion P7, and the portion P8 of FIG. 15 , or the arrangementof the light-emitting units 16 and the corresponding relationshipbetween the light-emitting units 16 and the corresponding mesh openings18 c of the display panel 10 may adopt designs of at least two of theportion P6, the portion P7, and the portion P8 of FIG. 15 , but notlimited thereto. In some embodiments, the arrangement of thelight-emitting units 16 and the corresponding relationship between thelight-emitting units 16 and the corresponding mesh openings 18 c in theportion P6, the portion P7, and/or the portion P8 of FIG. 15 may beadapted to any one of the above embodiments shown in FIG. 1 to FIG. 12 .

In summary, in the electronic device of the present disclosure, the meshopenings that do not overlap the light-emitting units are provided inthe mesh units and the bridge units corresponding to the first displayregion, or openings that do not overlap the light-emitting units areprovided in the transparent sensing electrodes, such that thetransmittances of portions of the display panel corresponding to themesh openings or the openings are improved. Accordingly, the opticalsensor corresponding to the first display region is able to detect lightwith higher intensity, thereby improving the quality of the detectedimages.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the disclosure. Accordingly, the abovedisclosure should be construed as limited only by the metes and boundsof the appended claims.

What is claimed is:
 1. A display panel, comprising: a substrate having afirst display region, wherein the first display region comprises atransparent area; a plurality of first light-emitting units disposed inthe first display region and outside the transparent area in a top viewdirection of the display panel; a plurality of first mesh units disposedin the first display region in the top view direction of the displaypanel, wherein each of the plurality of first mesh units has a firstmesh frame, and the first mesh frame forms a plurality of first meshopenings; and a plurality of second mesh units disposed on the firstdisplay region of the substrate, wherein the plurality of second meshunits and the plurality of first mesh units are arranged in differentdirections, and one of the plurality of first mesh units and one of theplurality of second mesh units are different in mesh pattern; whereinthe transparent area overlaps at least one of the plurality of firstmesh openings in the top view direction of the display panel.
 2. Thedisplay panel as claimed in claim 1, wherein the first mesh frame has anoutline in the top view direction of the display panel, and a part ofthe outline is curved.
 3. The display panel as claimed in claim 1,wherein the first mesh frame further forms a plurality of second meshopenings, wherein one of the plurality of second mesh openings overlapsat least one of the plurality of first light-emitting units in the topview direction of the display panel.
 4. The display panel as claimed inclaim 3, wherein a ratio of a width of one of the plurality of firstmesh openings to a width of one of the plurality of second mesh openingsis greater than or equal to 1.01 and less than or equal to
 5. 5. Thedisplay panel as claimed in claim 1, wherein each of the plurality ofsecond mesh units has a second mesh frame, the second mesh frame forms aplurality of third mesh openings, the plurality of third mesh openingsdo not overlap the plurality of first light-emitting units in the topview direction of the display panel, and the plurality of first meshopenings and the plurality of third mesh openings are different innumbers.
 6. The display panel as claimed in claim 1, wherein thesubstrate further comprises a second display region, and the displaypanel further comprises: a plurality of second light-emitting unitsdisposed in the second display region in the top view direction of thedisplay panel; and a plurality of third mesh units disposed in thesecond display region in the top view direction of the display panel,wherein one of the plurality of third mesh units comprises a pluralityof fourth mesh openings, and one of the plurality of fourth meshopenings overlaps at least one of the plurality of second light-emittingunits in the top view direction of the display panel.
 7. The displaypanel as claimed in claim 6, wherein the one of the plurality of firstmesh units and the one of the plurality of third mesh units aredifferent in mesh pattern.
 8. An electronic device, comprising: adisplay panel, comprising: a substrate having a first display region,wherein the first display region comprises a transparent area; aplurality of first light-emitting units disposed in the first displayregion and outside the transparent area in a top view direction of thedisplay panel; a plurality of first mesh units disposed in the firstdisplay region in the top view direction of the display panel, whereineach of the plurality of first mesh units has a first mesh frame, andthe first mesh frame forms a plurality of first mesh openings; and aplurality of second mesh units disposed on the first display region ofthe substrate, wherein the plurality of second mesh units and theplurality of first mesh units are arranged in different directions, eachof the plurality of second mesh units has a second mesh frame, thesecond mesh frame forms a plurality of second mesh openings, theplurality of second mesh openings do not overlap the plurality of firstlight-emitting units in the top view direction of the display panel, andthe plurality of first mesh openings and the plurality of second meshopenings are different in numbers, and wherein the transparent areaoverlaps at least one of the plurality of first mesh openings in the topview direction of the display panel; and an optical sensor disposedunder the first display region of the substrate.
 9. The electronicdevice as claimed in claim 8, wherein the optical sensor is for sensinga visible light.
 10. The electronic device as claimed in claim 8,wherein the optical sensor is for sensing a non-visible light.
 11. Adisplay panel, comprising: a substrate having a first display region anda second display region, wherein the first display region comprises atransparent area; a plurality of first light-emitting units disposed inthe first display region and outside the transparent area in a top viewdirection of the display panel; a plurality of first mesh units disposedin the first display region in the top view direction of the displaypanel, wherein each of the plurality of first mesh units has a firstmesh frame, and the first mesh frame forms a plurality of first meshopenings; a plurality of second light-emitting units disposed in thesecond display region in the top view direction of the display panel;and a plurality of second mesh units disposed in the second displayregion in the top view direction of the display panel, wherein one ofthe plurality of second mesh units comprises a plurality of second meshopenings, and one of the plurality of second mesh openings overlaps atleast one of the plurality of second light-emitting units in the topview direction of the display panel, wherein the transparent areaoverlaps at least one of the plurality of first mesh openings in the topview direction of the display panel, and wherein one of the plurality offirst mesh units and the one of the plurality of second mesh units aredifferent in mesh pattern.